package cn.yx.framework.Interceptor;

import cn.com.yx.ms.service.IUserContextService;
import cn.yx.framework.context.UserContext;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Created by Administrator on 2017-07-06.
 */
public class DefaultInterceptor implements HandlerInterceptor {
    @Resource
    private IUserContextService iUserContextService;
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {

        if(iUserContextService.getUserContext()!=null) {
            UserContext userContext = iUserContextService.getUserContext();
            System.out.println(">>> MyUserContext >>> " + userContext.getId());
            // 重新设置用户上下文
            iUserContextService.setUserContext(userContext);
        }
        //System.out.println(">>>MyInterceptor1>>>>>>>在请求处理之前进行调用（Controller方法调用之前）");

        return true;// 只有返回true才会继续向下执行，返回false取消当前请求
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
                           ModelAndView modelAndView) throws Exception {
        // System.out.println(">>>MyInterceptor1>>>>>>>请求处理之后进行调用，但是在视图被渲染之前（Controller方法调用之后）");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
        // System.out.println(">>>MyInterceptor1>>>>>>>在整个请求结束之后被调用，也就是在DispatcherServlet 渲染了对应的视图之后执行（主要是用于进行资源清理工作）");
    }
}
